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LG MG295 Service Manual
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LG MG295 Service Manual

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Internal Use Only
Service Manual
MG295/MG296/KG296
Date: October, 2007 / Issue 1.0

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Summary of Contents for LG MG295

  • Page 1 Internal Use Only Service Manual MG295/MG296/KG296 Date: October, 2007 / Issue 1.0...

  • Page 2: Table Of Contents

    4.13 Receiver Trouble........71 13.3 Accessory ......... 144 4.14 Microphone Trouble ......73 4.15 RTC Trouble ........75 4.16 Folder on/off Trouble......77 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 3 - Only for training and service purposes...

  • Page 3: Only For Training And Service Purposes

    LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 4 - Only for training and service purposes...

  • Page 4: Introduction

    The user may not make any changes and/or repairs expect as specifically noted in this manual. Therefore, note that unauthorized alternations or repair may affect the regulatory status of the system and may void any remaining warranty. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 5 -...

  • Page 5: Only For Training And Service Purposes

    • When returning system boards or parts like EEPROM to the factory, use the protective package as described. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 6 - Only for training and service purposes...

  • Page 6: Abbreviations

    International Portable User Identity Intermediate Frequency Liquid Crystal Display Low Drop Output Light Emitting Diode OPLL Offset Phase Locked Loop Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 7 - Only for training and service purposes...

  • Page 7: Only For Training And Service Purposes

    Time Division Multiple Access UART Universal Asynchronous Receiver/Transmitter Voltage Controlled Oscillator VCTCXO Voltage Control Temperature Compensated Crystal Oscillator Wireless Application Protocol LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 8 - Only for training and service purposes...

  • Page 8: Performance

    Travel Adapter MIDI SW MIDI (Mono SPK) Camera 1.3M Bluetooth / FM Radio Bluetooth version 2.0+EDR / 76~108MHz supported Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 9 - Only for training and service purposes...

  • Page 9: Technical Specification

    8 dBm 22 dBm 6 dBm 20 dBm 4 dBm 18 dBm 2 dBm 16 dBm 0 dBm LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 10 - Only for training and service purposes...

  • Page 10: Only For Training And Service Purposes

    6,000 GSM, EGSM Offset from Carrier (kHz) Max. (dBm) Output RF Spectrum (due to switching transient) 1,200 1,800 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 11 - Only for training and service purposes...

  • Page 11: Only For Training And Service Purposes

    * Mean that Adopt a straight line in between 300 Hz and 1,000 Hz to be Max. level in the range. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 12 - Only for training and service purposes...

  • Page 12: Only For Training And Service Purposes

    3.86V 0.05 V ~ 3.56 0.05 V (Call) every 1 minutes Low Voltage Warning 3.50 0.05 V (Standby) Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 13 - Only for training and service purposes...

  • Page 13: Only For Training And Service Purposes

    Capacity: 830mAh Switching-mode charger Travel Charger Input: 100 ~ 240 V, 50/60 Hz Output: 5.1 V, 700 mA LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 14 - Only for training and service purposes...

  • Page 14: Technical Brief

    The ENABLE input allows initial turn-on of PAM circuitry to minimize battery drain. Figure 3.1 Functional Block Diagram Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 15 -...

  • Page 15: Only For Training And Service Purposes

    BiCMOS Enable RSVD(GND) RF and DC Ground VAPC Power Control Bias Voltage GND PAD Ground Pad, device underside LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 16 - Only for training and service purposes...

  • Page 16: Transceiver (Ad6548, U503)

    A standard 3 wire serial interface is used to program the IC. The interface features low-voltage digital interface buffers compatible with logic levels from 1.6V to 2.9V. Figure 3.2 AD6548 Block Diagram Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 17 -...

  • Page 17: Only For Training And Service Purposes

    2. Internally connected as Synth supply (Counters + SDM + Charge pump) 3. Supply regulated by internal LDO2 and should not be connected to any other supply LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 18 - Only for training and service purposes...

  • Page 18: Fem For Triband(Fl501)

    GND1 DCS_RX+ 2V75_VVCXO DCS_RX- VCTRL3 EGSM_RX+ VCTRL2 EGSM_RX- VCTRL1 GSM_RX+ GMS_RX- C534 0.1u Figure 3.3.1 FEM CIRCUIT DIAGRAM Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 19 - Only for training and service purposes...

  • Page 19: 26 Mhz Clock (Crystal, X501)

    Dedicated control software ensures excellent frequency stability under all circumstances. 26MHz X501 FA-23H Figure 3.4 CRYSTAL CIRCUIT DIAGRAM LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 20 - Only for training and service purposes...
  • Page 20 • GSM 900/850 power classes 4 and 5, • DCS 1800 power classes 1 and 2, and • PCS 1900 power classes 1 and 2 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 21 -...

  • Page 21: Only For Training And Service Purposes

    3. TECHNICAL BRIEF Figure 3.5 SYSTEM INTERCONECTION OF AD6721 EXTERNAL INTERFACE LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 22 - Only for training and service purposes...

  • Page 22: Only For Training And Service Purposes

    IF_MODE Select 16bits or 8bits interface mode for MAIN LCD. For the future Table 3.5.B LCD CONTRON SIGNALS DISCRIPTION Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 23 - Only for training and service purposes...

  • Page 23: Only For Training And Service Purposes

    S_DATA (GPO 20) Serial Data to PLL S_CLK (GPO 21) Clock to PLL Table 3.5.C RF CONTROL SIGNALS DESCRIPTION LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 24 - Only for training and service purposes...

  • Page 24: Only For Training And Service Purposes

    2V85_VSIM 2V85_VSIM SIM CONNECTOR J202 R226 SIM_RST SIM_DATA SIM_CLK (KDS, 1.6T) C227 Figure 3.5.D2 SIM Interface of AD6721 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 25 - Only for training and service purposes...

  • Page 25: Only For Training And Service Purposes

    - 2V75_VVCXO: supplies the voltage controlled crystal oscillator ( 2.75 V, 10 mA) - VUSB:supplies USB interface circuitry( 3.2V, 20mA) - VGP: supplies VDD_IO3 of MMP(3.2V, 40mA) LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 26 - Only for training and service purposes...

  • Page 26: Baseband Processor (Ad6721 , U103)

    • LCD_ID : LCD type selection signals - LCD_ID : LCD maker(0V for LGIT, 2.8V for Sharp) • For using 262K color, data buses should be 16 bits. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 27 -...

  • Page 27: Only For Training And Service Purposes

    R703 INOUT_A2 INOUT_B2 C_CD05 VSYNCOUT INOUT_A3 INOUT_B3 C_CD06 100ohm INOUT_A4 INOUT_B4 C_CD07 VBACKUP Figure 3.6 LCD INTERFACE CIRCUIT LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 28 - Only for training and service purposes...

  • Page 28: Camera Interface(Ait813G , U402)

    YCbCr is real data interface signal. Figure 3.7.1 AIT813G BLOCK DIAGRAM Figure 3.7.2 SENSOR CHIP BLOCK DIAGRAM Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 29 - Only for training and service purposes...

  • Page 29: Only For Training And Service Purposes

    3. TECHNICAL BRIEF Figure 3.7.3 AIT813G CIRCUIT LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 30 - Only for training and service purposes...

  • Page 30: Keypad Switches And Scanning

    R338 KEY_ROW5 R339 KEY_COL0 R340 KEY_COL1 R341 KEY_COL2 R342 KEY_COL3 R343 KEY_COL4 Figure 3.8 Keypad Switches and Scanning Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 31 - Only for training and service purposes...

  • Page 31: Microphone

    OB4-15L42-C33L C212 C213 C217 0.1u R223 100ohm MIC200 MIC_N R225 2.2K Figure 3.9 Connection between Microphone and AD6721 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 32 - Only for training and service purposes...

  • Page 32: Main Speaker

    SPK_N SPK_RCV_P COM2 R417 SPK_RCV_N SPK_SEL COM1 SPK_SEL REC_P REC_N Figure 3.10 Connection between Speaker, Amp and AD6721 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 33 - Only for training and service purposes...

  • Page 33: Headset Interface

    C215 C216 VA202 C219 R224 C221 C222 C220 C218 C223 L200 4.7uH 150p Figure 3.11 HEADSET JACK INTERFACE LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 34 - Only for training and service purposes...

  • Page 34: Key Back-Light Illumination

    In key back-light illumination, there are 12 White LEDs in Main Board, which are driven by KEY_BACKLIGHT3 signal from AD6721. KEY BACKLIGHT VBAT VBAT KEY_BACKLIGHT3 Figure 3.12 KEY BACK-LIGHT ILLUMINTION Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 35 - Only for training and service purposes...

  • Page 35: Lcd Back-Light Illumination

    VBAT VBAT R603 R604 R609 R611 VIBRATOR 1.5K MOTOR R614 C605 Q600 7.5K 4.7u EMZ2 Figure 3.14 Vibrator LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 36 - Only for training and service purposes...

  • Page 36: Bluetooth & Fm Radio (Bcm2048, U600)

    A_GPIO0 VDDO33_1 VDDO33_2 _BT_RST RST_N VDDO33_3 C614 1000p C616 C617 0.1u C619 0.1u Figure 3.5 BCM2048 CIRCUIT DIAGRAM Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 37 - Only for training and service purposes...

  • Page 37: Battery Charging

    PGND R111 R112 R113 C139 C140 C141 R110 220K 100K (1%) (1%) Figure 3.15 CIRCUIT FOR BATTERY CHARGING LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 38 - Only for training and service purposes...

  • Page 38: Trouble Shooting

    Figure 4.1 U502 Power Amp Module (SKY77318) U503 (AD6548) RF Main Chip (Transceiver) X501 Crystal, 26MHz Clock FL501 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 39 - Only for training and service purposes...

  • Page 39: Rx Trouble

    Crystal Circuit (2) Check Mobile SW &FEM (3) Check RX I/Q Signal Re-download SW or Do calibration again LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 40 - Only for training and service purposes...

  • Page 40: Only For Training And Service Purposes

    R508 CIRCUIT 2V75_VVCXO U501 MC74VHC1G04DFT2G C511 1000p 26M_DBB C515 26M_BT R509 2.2u R508 WAVEFORM Graph 4.2.1(a) Graph 4.2.1(b) Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 41 - Only for training and service purposes...

  • Page 41: Only For Training And Service Purposes

    EGSM_RX- VCTRL1 GSM_RX+ GMS_RX- C534 0.1u R516 100ohm ANT_SW1 R517 100ohm ANT_SW2 R518 100ohm ANT_SW3 C543 C544 C545 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 42 - Only for training and service purposes...

  • Page 42: Only For Training And Service Purposes

    For this RF Level test case, RX Stand alone Mode is needed refer to chapter 10 Rx Mode Vctrl1 Vctrl2 Vctrl3 Table 4.2.2 - 43 - Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 43: Only For Training And Service Purposes

    Check if there is any Similar? Replace U503 Major difference Refer to graph 4.2.3 Redownload software and calibration again LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 44 - Only for training and service purposes...

  • Page 44: Tx Trouble

    Mobile SW & FEM (3)Check PAM control signal (4)Check TX I/Q Signal Redownload SW or Do calibration again Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 45 - Only for training and service purposes...

  • Page 45: Only For Training And Service Purposes

    Figure 7 CIRCUIT 2V75_VVCXO U501 MC74VHC1G04DFT2G C511 1000p 26M_DBB C515 26M_BT R509 2.2u R508 Waveform Graph 4.2.1(b) Graph 4.2.1(a) LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 46 - Only for training and service purposes...

  • Page 46: Only For Training And Service Purposes

    Vctrl 3 R516 100ohm ANT_SW1 R517 100ohm ANT_SW2 R518 100ohm ANT_SW3 Graph 4.3.2(b) DCS,PCS Tx mode C543 C544 C545 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 47 - Only for training and service purposes...

  • Page 47: Only For Training And Service Purposes

    Changing SW501 Short with RF Cable disconnected TX Mode EGSM DCS/PCSS Vctrl 1 Vctrl 2 Vctrl 3 Table 4.3.2 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 48 - Only for training and service purposes...

  • Page 48: Only For Training And Service Purposes

    Any Major Difference or not Any Major Difference or not Refer to Graph 4.3.3 Go to Next Step Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 49 - Only for training and service purposes...

  • Page 49: Only For Training And Service Purposes

    Check if there is Replace U503 Similar? Any Major Difference Refer to Graph4.3.4 Re-download the Software And calibrate LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 50 - Only for training and service purposes...

  • Page 50: Power On Trouble

    VABB_LDO C129 C130 C131 C133 C134 C135 2.2u 0.1u VAPP C127 C128 VAPPGATE PWREN VAPPCFG VMEMSEL VRTCSEL PMTSEL Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 51 - Only for training and service purposes...

  • Page 51: Only For Training And Service Purposes

    Replace U100 and Re-download software Does it work properly? The phone will Replace the main board Properly operating. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 52 - Only for training and service purposes...

  • Page 52: Charging Trouble

    _PPR _CHG CHG_STAT ICDL USBON CHG_EN PGND R111 R112 R113 C139 C140 C141 R110 220K 100K (1%) (1%) Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 53 - Only for training and service purposes...

  • Page 53: Only For Training And Service Purposes

    Is Voltage across R108 U102 about 0V? Battery is charged? Replace the main board Charging is properly operating LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 54 - Only for training and service purposes...

  • Page 54: Vibrator Trouble

    Figure 4.6 CIRCUIT VIBRATOR VBAT VBAT R603 R604 R609 R611 VIBRATOR 1.5K MOTOR R614 Q600 C605 7.5K EMZ2 4.7u Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 55 - Only for training and service purposes...
  • Page 55 R603, Q600 Check the soldering Resolder or Replace vibrator of vibrator ? Replace vibrator Vibrator Working well ! LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 56 - Only for training and service purposes...

  • Page 56: Lcd Trouble

    4. TROUBLE SHOOTING 4.7 LCD Trouble TEST POINT FL701 FL702 FL703 FL706 FL708 CN700 FL705 FL707 FL700 U405 Figure 4.7 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 57 - Only for training and service purposes...

  • Page 57: Only For Training And Service Purposes

    100ohm INOUT_A4 INOUT_B4 C_CD07 VBACKUP 2V8_MV 2V8_AMV 1V8_VCAM 2V8_VEXT VBAT FB400 U405 RT9011-MGPQW VOUT1 VOUT2 C437 C438 C439 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 58 - Only for training and service purposes...

  • Page 58: Only For Training And Service Purposes

    Check the soldering of (FL700,FL701,FL702,FL703,FL705,FL707) EMI filter ? Does LCD work Replace LCD module properly ? LCD working well ! Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 59 - Only for training and service purposes...

  • Page 59: Camera Trouble

    4. TROUBLE SHOOTING 4.8 Camera Trouble TEST POINT FL707 FL708 FL704 FL706 U401 U402(AIT813) U405 Figure 4.8 Figure 17 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 60 - Only for training and service purposes...

  • Page 60: Only For Training And Service Purposes

    C425 13M_AIT PMCLK _PLCD_WE LCD_WR 1000p VDD_IO0 PLCD17 GND_IO0 PLCD16 C437 C438 C439 2V8_MV C433 2V8_AMV C435 C436 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 61 - Only for training and service purposes...

  • Page 61: Only For Training And Service Purposes

    Replace the camera module Replace the U405 Check the signals of the Replace FL704,FL706,FL707,FL708 FL704,FL706,FL707,FL708 Camera will work properly LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 62 - Only for training and service purposes...

  • Page 62: Speaker Trouble

    C432 R416 100K 220n U404 NLAS5223BMNR2G SPK_P C434 SPK_N COM2 SPK_RCV_P R417 SPK_RCV_N SPK_SEL COM1 SPK_SEL REC_P REC_N Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 63 - Only for training and service purposes...

  • Page 63: Only For Training And Service Purposes

    And work properly Check the Power voltage Change the U404 U404 = VBAT And work properly ? Speaker Working well!! LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 64 - Only for training and service purposes...

  • Page 64: Sim Card Interface Trouble

    R226 J202 Figure 4.10 CIRCUIT DIAGRAM 2V85_VSIM 2V85_VSIM SIM CONNECTOR J202 R226 SIM_RST SIM_DATA SIM_CLK (KDS, 1.6T) C227 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 65 - Only for training and service purposes...

  • Page 65: Only For Training And Service Purposes

    Does it work Does it work Properly? Properly? SIM card is properly working SIM card is properly working. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 66 - Only for training and service purposes...

  • Page 66: Earphone Trouble

    NO_POP_R FM_ANT VA200 VA201 C214 C215 C216 VA202 C219 R224 C221 C222 C220 C223 L200 C218 4.7uH 150p Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 67 - Only for training and service purposes...

  • Page 67: Only For Training And Service Purposes

    Or Change the U103 and try again the earphone? the earphone? Earphone will work properly LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 68 - Only for training and service purposes...

  • Page 68: Key Backlight Trouble

    4. TROUBLE SHOOTING 4.12 KEY backlight Trouble TEST POINT VA308 Figure 4.12 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 69 - Only for training and service purposes...

  • Page 69: Only For Training And Service Purposes

    Are all LEDs Check the soldering Working? each R and LED Replace or resolder Backlight will work properly. component LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 70 - Only for training and service purposes...

  • Page 70: Receiver Trouble

    AOUT1N REC_N AOUT2P1 R118 C155 C156 AOUT2P2 AOUT2N1 R119 AOUT2N2 AOUT3L AOUT3R SPK_P_ABB R120 C157 R121 4.7 SPK_N_ABB Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 71 - Only for training and service purposes...

  • Page 71: Only For Training And Service Purposes

    Change the U103 R1161 and R117 fluctuate? Is receiver connected Resolder/Change the receiver Properly? Receiver will work properly. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 72 - Only for training and service purposes...

  • Page 72: Microphone Trouble

    R218 C209 C205 2.2K R222 100ohm MIC_P OB4-15L42-C33L C212 C213 C217 0.1u R223 100ohm MIC200 MIC_N R225 2.2K Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 73 - Only for training and service purposes...

  • Page 73: Only For Training And Service Purposes

    Is it a few tens mV AC? Check the soldering of Resolder component R222,R223,C212 ,C217 Microphone will work properly. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 74 - Only for training and service purposes...

  • Page 74: Rtc Trouble

    C124 1000p 26M_DBB CLKIN CHG_EN GPIO_0 32.768KHz C125 CHG_STAT GPIO_1 BT_LDO_EN GPIO_2 VIBRATOR GPIO_3 LCD_IF GPIO_4 FLIP GPIO_5 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 75 - Only for training and service purposes...

  • Page 75: Only For Training And Service Purposes

    R102 about 400mV? change the X100 Re-download software and try Is RTC properly working? again RTC will work properly LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 76 - Only for training and service purposes...

  • Page 76: Folder On/Off Trouble

    4.16 Folder on/off Trouble TEST POINT U400 Figure 4.17 CIRCUIT DIAGRAM FLIP SWITCH 2V8_VEXT U400 FLIP C418 C417 C416 EM-1681-FT 0.1u Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 77 - Only for training and service purposes...

  • Page 77: Only For Training And Service Purposes

    =2.8V Close folder. Replace U400 Voltage at pin 1 of U400 = 0V Folder on/off will work properly LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 78 - Only for training and service purposes...

  • Page 78: Micro Sd Trouble

    J200 TF_DAT2 TF_DAT1 DAT2 DAT1 TF_DAT3 TF_DAT0 DAT3 DAT0 TF_CMD TF_CLK GND1 GND3 GND2 GND4 R206 C202 470K Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 79 - Only for training and service purposes...
  • Page 79 Check out TF_CLK & Data Re-download SW Timing OK? Replace Micro SD Card Micro SD Card will work properly LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 80 - Only for training and service purposes...

  • Page 80: Bluetooth & Fm Radio Trouble

    PCM_SYNC A_GPIO1 VDDFM5 TP607 USC0 A_GPIO0 VDDO33_1 VDDO33_2 _BT_RST RST_N VDDO33_3 C614 1000p C616 C617 0.1u C619 0.1u Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 81 - Only for training and service purposes...
  • Page 81 Refer to Graph 4.19.4 FM_AUDIO_L/R OK ? A_GPIO1~3(TP04~06) OK ? Change U600 Check the ear jack contact Bluetooth will work properly LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 82 - Only for training and service purposes...
  • Page 82 4. TROUBLE SHOOTING WAVEFORM Graph 4.19.1 Graph 4.19.2 Graph 4.19.3 Graph 4.19.4 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 83 - Only for training and service purposes...

  • Page 83: Download

    5. DOWNLOAD 5. DOWNLOAD 5.1 Download A. Download Setup Figure 5.1 describes Download setup Figure 5.1 Download Setup LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 84 - Only for training and service purposes...
  • Page 84 5. DOWNLOAD B. Multi Download Procedure 1. Run GSM Multi Download program and select Setting Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 85 - Only for training and service purposes...
  • Page 85 2. Select Configuration from the menu and you may see this window 3. Press key to select DLL file and press Open LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 86 - Only for training and service purposes...
  • Page 86 5. Select AlchemyData.mot and press open 6. Repeat step 4-5 to select CodeData.mot Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 87 - Only for training and service purposes...
  • Page 87 7. Check if the ADI option is set to Hermes 8. Press OK to end Configuration Select Rate LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 88 - Only for training and service purposes...
  • Page 88 9. Press START to execute download 10. Once downloading is started, press STOP button to keep from re-downloading after downloading is completed. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 89 - Only for training and service purposes...
  • Page 89 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 90 - Only for training and service purposes...

  • Page 90: Circuit Diagram

    OJ103 USB BOOT INT CLOCK MG295D MODEL USB BOOT EXT CLOCK AUXOP_L AUXOP_R LG(42)-A-5505-10:01 LG Electronics Inc. LGMC - 91 - Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 91 2V85_VSIM SIM CONNECTOR J202 R226 SIM_RST SIM_DATA SIM_CLK (KDS, 1.6T) C227 MG295D MODEL LGIC(42)-A-5505-10:01 LG Electronics Inc. LGMC - 92 - Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 92 UART USC0 CLOCK USC1 USC2 RTS/CTS(PC) USC4 CTS/RTS(PC) USC5 USC6 RESET MG295D MODEL LGIC(42)-A-5505-10:01 LG Electronics Inc. LGMC - 93 - Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 93 1V8_VCAM 2V8_VEXT VBAT FB400 U405 RT9011-MGPQW VOUT1 VOUT2 C437 C438 C439 MG295D MODEL LGIC(42)-A-5505-10:01 LG Electronics Inc. LGMC - 94 - Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 94 PT501 EGSM RX DCS RX PCS RX GSM/EGSM TX DCS/PCS TX MG295D MODEL LGIC(42)-A-5505-10:01 LG Electronics Inc. LGMC - 95 - Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 95 C_CD07 VBACKUP IF MODE 16BIT HIGH 9 BIT / 2 260K MG295D MODEL LGIC(42)-A-5505-10:01 LG Electronics Inc. LGMC - 96 - Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 96 U603 USC1 TC7SH08FS PCM_TX_BT R618 C626 PCM_SYNC USC3 0.1u C627 0.1u MG295D MODEL LGIC(42)-A-5505-10:01 LG Electronics Inc. LGMC - 97 - Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 97 INOUT_A4 C_DATA00 C_PCLK INOUT_A4 INOUT_B4 C_RST TP100 TP101 TP102 TP103 TP104 TP105 MG295D MODEL LG Electronics Inc. LGMC - 98 - Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 98 V_DOWN CN100 KEY_COL1 KEY_COL0 KEY_COL2 KEY_COL0 KEY_ROW0 KEY_ROW0 KEY_COL2 KEY_COL1 TP100 MG295D MODEL LGIC(42)-A-5505-10:01 LG Electronics Inc. LGMC - 99 - Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 99 - 100 - Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 100: Bga Ic Pin Check

    7. BGA IC Pin Check 7. BGA IC Pin Check Not used U103 AD6721(EUSY0321501) PIN MAP Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 101 - Only for training and service purposes...
  • Page 101 7. BGA IC Pin Check LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 102 - Only for training and service purposes...
  • Page 102 7. BGA IC Pin Check U600 BCM2048 (EUSY0319601) PIN MAP Not used Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 103 - Only for training and service purposes...
  • Page 103 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 104 - Only for training and service purposes...

  • Page 104: Pcb Layout

    8. PCB LAYOUT - 105 - Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 105 Canít boot the phone U103 AD6721 Canít boot the phone U600 BCM2048 No B/T Connection No FM tunner - 106 - Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 106 8. PCB LAYOUT - 107 - Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 107 No sounds No camera preview CN102 Camera connector No camera preview CN100 LCD connector No LCD display No Sounds - 108 - Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 108: Block Diagram

    9. BLOCK DIAGRAM 9. BLOCK DIAGRAM Figure 9.1 LG-MG295 Block Diagram Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 109 - Only for training and service purposes...

  • Page 109: Engineering Mode

    Buzzer Backlight Bluetooth On Vibrator Buzzer Bluetooth Off Vibrator Key PAD MicSpkTest Battery Camera Audio Video camera Bluetooth LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 110 - Only for training and service purposes...

  • Page 110: Bb Test [Menu 1]

    This menu is to test the vibration mode. 1) Vibrator on : Vibration mode is on. 2) Vibrator off : Vibration mode is off. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 111 -...
  • Page 111 This menu is to set the Bluetooth thest 1) Enter test mode 2) Test TX Channel 3) Bypass mode ON 4) Bypass mode off LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 112 - Only for training and service purposes...

  • Page 112: Rf Test [Menu 2]

    [Soft2 Key]. If the key is working properly, name of the key is displayed on the screen. Test will be completed in 15 seconds automatically. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 113 -...

  • Page 113: Trace Option [Menu 4]

    RF Calibration data, etc. cannot be restored again. 10.7 S/W version This displays software version stored in the phone. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 114 - Only for training and service purposes...

  • Page 114: Stand Alone Test

    - See if the value of RSSI is close to -16dBm when setting the value between 0 ~ 26 in Gain Control Index. - Normal phone should indicate the value of RSSI close to -16dBm. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 115 -...

  • Page 115: Means Of Test

    After setting them all above, press connect button. e. Press the start button Connect Button Figure 11.3.1 HW test program LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 116 - Only for training and service purposes...
  • Page 116 11. STAND ALONE TEST Figure 11.3.2 HW test setting Figure 11.3.3 Ramping profile Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 117 - Only for training and service purposes...

  • Page 117: Auto Calibration

    PC (for Software Installation) Pentium II class above 300MHz Table 12.2.1 Calibration Equipment List. Figure 12.2.1 Equipment Setup LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 118 - Only for training and service purposes...

  • Page 118: Test Jig Operation

    Indicate data transfer state through the UART port LED 4 Indicate data transfer state through the MON port Table 12.3.3 LED Description Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 119 - Only for training and service purposes...

  • Page 119: Procedure

    TEST JIG, in general.) 2. Run Hot_Kimchi.exe to start calibration. 3. From the Calibration menu, Select MG295! MG295 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 120 - Only for training and service purposes...
  • Page 120 12. AUTO CALIBRATION 4. Press Calibration START MG295 MG295 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 121 - Only for training and service purposes...

  • Page 121: Agc

    This procedure is for battery calibration. You can get main Battery Config Table and temperature Config Table will be reset. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 122 - Only for training and service purposes...

  • Page 122: Exploded View & Replacement Part List

    13. EXPLODED VIEW & REPLACEMENT PART LIST 13.1 EXPLODED VIEW - 123 - Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 123 - 124 - Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 124: Replacement Parts

    MOLD, PC LUPOY SC-1004A, , , , , Silver MFBD00 FILTER,MIKE MFBD0024001 COMPLEX, (empty), , , , , MICC00 INSERT,FRONT(UPPER) MICC0008901 Silver Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 125 - Only for training and service purposes...
  • Page 125 DOME ASSY,METAL ADCA0067401 MPBH00 PAD,MIKE MPBH0031201 COMPLEX, (empty), , , , , MLAZ00 LABEL MLAZ0038301 PID Label 4 Array LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 126 - Only for training and service purposes...

  • Page 126: Main Component

    3 V,80 mA,10*2.7 ,17mm SUSY00 SPEAKER SUSY0023602 ASSY ,8 ohm,90 dB,1813 mm,15mm ,; , , , , , , ,WIRE Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 127 - Only for training and service purposes...
  • Page 127 ECCH0000182 0.1 uF,10V ,K ,X5R ,HD ,1005 ,R/TP C119 CAP,CERAMIC,CHIP ECCH0000182 0.1 uF,10V ,K ,X5R ,HD ,1005 ,R/TP LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 128 - Only for training and service purposes...
  • Page 128 ECCH0000113 18 pF,50V,J,NP0,TC,1005,R/TP C151 CAP,CERAMIC,CHIP ECCH0000113 18 pF,50V,J,NP0,TC,1005,R/TP C152 CAP,CERAMIC,CHIP ECCH0000182 0.1 uF,10V ,K ,X5R ,HD ,1005 ,R/TP Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 129 - Only for training and service purposes...
  • Page 129 ECCH0000120 39 pF,50V,J,NP0,TC,1005,R/TP C221 CAP,CERAMIC,CHIP ECCH0000187 150 pF,50V ,J ,NP0 ,TC ,1005 ,R/TP C222 CAP,CERAMIC,CHIP ECCH0000122 47 pF,50V,J,NP0,TC,1005,R/TP LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 130 - Only for training and service purposes...
  • Page 130 ECCH0004904 1 uF,6.3V ,K ,X5R ,TC ,1005 ,R/TP C420 CAP,CERAMIC,CHIP ECCH0004904 1 uF,6.3V ,K ,X5R ,TC ,1005 ,R/TP Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 131 - Only for training and service purposes...
  • Page 131 ECZH0001421 2.2 uF,6.3V ,K ,X5R ,HD ,1608 ,R/TP C516 CAP,CHIP,MAKER ECZH0000813 100 pF,50V ,J ,NP0 ,TC ,1005 ,R/TP LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 132 - Only for training and service purposes...
  • Page 132 ECCH0000122 47 pF,50V,J,NP0,TC,1005,R/TP C602 CAP,CERAMIC,CHIP ECCH0000183 1.8 pF,50V ,C ,NP0 ,TC ,1005 ,R/TP C603 CAP,CERAMIC,CHIP ECCH0000122 47 pF,50V,J,NP0,TC,1005,R/TP Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 133 - Only for training and service purposes...
  • Page 133 C707 CAP,CERAMIC,CHIP ECCH0004904 1 uF,6.3V ,K ,X5R ,TC ,1005 ,R/TP CN301 CONNECTOR,I/O ENRY0003501 24 PIN,0.5 mm,ANGLE , , LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 134 - Only for training and service purposes...
  • Page 134 EARPHONE J202 CONN,SOCKET ENSY0001602 6 PIN,ETC ,5 IRECTIONAL ,2.54 mm,K(GC200) L200 INDUCTOR,CHIP ELCH0004103 4.7 uH,K ,1608 ,R/TP ,CHIP Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 135 - Only for training and service purposes...
  • Page 135 4.7 ohm,1/16W ,J ,1005 ,R/TP R117 RES,CHIP,MAKER ERHZ0000488 4.7 ohm,1/16W ,J ,1005 ,R/TP R120 RES,CHIP,MAKER ERHZ0000488 4.7 ohm,1/16W ,J ,1005 ,R/TP LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 136 - Only for training and service purposes...
  • Page 136 12 Kohm,1/16W ,J ,1005 ,R/TP R320 RES,CHIP,MAKER ERHZ0000406 100 Kohm,1/16W ,J ,1005 ,R/TP R322 RES,CHIP,MAKER ERHZ0000483 47 ohm,1/16W ,J ,1005 ,R/TP Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 137 - Only for training and service purposes...
  • Page 137 2.2 nH,S ,1005 ,R/TP ,Pb Free R506 INDUCTOR,CHIP ELCH0001413 22 nH,J ,1005 ,R/TP ,PBFREE R507 RES,CHIP,MAKER ERHZ0000522 24 ohm,1/16W ,J ,1005 ,R/TP LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 138 - Only for training and service purposes...
  • Page 138 + 64M PSRAM / IO 3.0V / BOTTOM BOOT / PB FREE SON5-P-0.35(fSV) ,5 PIN,R/TP ,2-INPUT AND GATE, Pb U101 EUSY0227901 Free Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 139 - Only for training and service purposes...
  • Page 139 SOD-923 ,5 V,150 mW,R/TP ,1.0*0.6*0.4 VA301 DIODE,TVS EDTY0009101 SOD-923 ,5 V,150 mW,R/TP ,1.0*0.6*0.4 VA302 VARISTOR SEVY0004201 14 V, ,SMD ,120pF, 1005 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 140 - Only for training and service purposes...
  • Page 140 WHITE ,1608 ,R/TP ,PB-FREE(ZENER) LD302 DIODE,LED,CHIP EDLH0011901 WHITE ,1608 ,R/TP ,PB-FREE(ZENER) LD303 DIODE,LED,CHIP EDLH0011901 WHITE ,1608 ,R/TP ,PB-FREE(ZENER) Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 141 - Only for training and service purposes...
  • Page 141 27 ohm,1/16W ,J ,1005 ,R/TP R357 RES,CHIP,MAKER ERHZ0000451 27 ohm,1/16W ,J ,1005 ,R/TP R358 RES,CHIP,MAKER ERHZ0000451 27 ohm,1/16W ,J ,1005 ,R/TP LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 142 - Only for training and service purposes...
  • Page 142 SOD-923 ,5 V,150 mW,R/TP ,1.0*0.6*0.4 VA308 VARISTOR SEVY0004201 14 V, ,SMD ,120pF, 1005 WSYY00 SOFTWARE WSYY0643201 MG295dP40FL-55-V10b-724-06 AUG 17 2007+5 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 143 - Only for training and service purposes...

  • Page 143: Accessory

    100/250V ,63 Hz,5.2 V,.8 A,IEC 60950(EN 60950) , ,; , , , SSAD00 ADAPTOR,AC-DC SSAD0023801 , , ,WALL 2P ,DC PIN PLUG , LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 144 - Only for training and service purposes...
  • Page 144 Note...
  • Page 145 Note...

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